IT8920940A0 - PROCEDURE FOR CREATING, BY COEXTRUSION, A LIGHTWEIGHT PIPE AND DIE FOR ITS CREATION. - Google Patents
PROCEDURE FOR CREATING, BY COEXTRUSION, A LIGHTWEIGHT PIPE AND DIE FOR ITS CREATION.Info
- Publication number
- IT8920940A0 IT8920940A0 IT8920940A IT2094089A IT8920940A0 IT 8920940 A0 IT8920940 A0 IT 8920940A0 IT 8920940 A IT8920940 A IT 8920940A IT 2094089 A IT2094089 A IT 2094089A IT 8920940 A0 IT8920940 A0 IT 8920940A0
- Authority
- IT
- Italy
- Prior art keywords
- coextrusion
- creation
- creating
- die
- procedure
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
- B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
- B29C44/507—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through an annular die
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0072—Roughness, e.g. anti-slip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8809125A FR2633554B1 (en) | 1988-07-04 | 1988-07-04 | METHOD FOR PRODUCING, BY COEXTRUSION, AN LIGHTWEIGHT PIPE AND DIE FOR ITS PRODUCTION |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8920940A0 true IT8920940A0 (en) | 1989-06-21 |
IT1230889B IT1230889B (en) | 1991-11-08 |
Family
ID=9368123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT8920940A IT1230889B (en) | 1988-07-04 | 1989-06-21 | PROCEDURE TO CREATE, BY COEXTRUSION, A LIGHTENED TUBE AND SUPPLY CHAIN FOR ITS REALIZATION. |
Country Status (10)
Country | Link |
---|---|
AT (1) | AT403778B (en) |
BE (1) | BE1006667A3 (en) |
CH (1) | CH680659A5 (en) |
DE (1) | DE3921853C2 (en) |
ES (1) | ES2015163A6 (en) |
FR (1) | FR2633554B1 (en) |
GB (1) | GB2220165B (en) |
IT (1) | IT1230889B (en) |
NL (1) | NL195010C (en) |
PT (1) | PT91013B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6827888B2 (en) * | 2001-01-23 | 2004-12-07 | Genpak Llc | Polymeric foam sheet using ambient gas blowing agent via controlled expansion |
CN102001173B (en) * | 2010-12-02 | 2013-06-05 | 铜陵三佳科技股份有限公司 | Co-extrusion die head for extruding profiled bars with co-extrusion surface |
CN102922723A (en) * | 2012-11-08 | 2013-02-13 | 苏州金纬机械制造有限公司 | Molding pipe split-flow mold |
CN106827449B (en) * | 2017-01-20 | 2022-11-25 | 广东科志达机械科技有限公司 | Film blowing device of film blowing machine |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE555596A (en) * | 1956-03-22 | 1900-01-01 | ||
GB1128809A (en) * | 1965-10-28 | 1968-10-02 | Monsanto Chemicals | Foamed resins |
US3497915A (en) * | 1967-03-16 | 1970-03-03 | Cupples Container Co | Extrusion die |
US3525125A (en) * | 1967-07-12 | 1970-08-25 | Basf Ag | Annular die for extruders,particularly an annular die for the production of blown tubular film and sheeting from expandable thermoplastics |
GB1211860A (en) * | 1967-10-03 | 1970-11-11 | Ici Ltd | A process for the production of pipe |
DE2126976A1 (en) * | 1970-05-29 | 1972-01-20 | Armosig | Extrusion press - with section of constant diameter to allow foaming action to stabilise |
FR2130735A5 (en) * | 1970-05-29 | 1972-11-10 | Armosig | |
FR2139626B3 (en) * | 1971-05-26 | 1973-05-25 | Armosig | |
US3899276A (en) * | 1973-05-29 | 1975-08-12 | Beloit Corp | Annular extrusion die with back pressure control |
US4057610A (en) * | 1975-07-25 | 1977-11-08 | Monsanto Company | Hose reinforced with discontinuous fibers oriented in the radial direction |
DE2610972C2 (en) * | 1976-03-16 | 1984-04-12 | Erich 7326 Heiningen Oprach | Device for the production of pipes or similar hollow strands made of thermoplastic material |
FR2427897A1 (en) * | 1978-06-09 | 1980-01-04 | Pont A Mousson | Pipe extrusion die allowing sudden wall thickness variation - by adjustment of the melt volume of a die receiving melt at a constant rate |
FR2455972A1 (en) * | 1979-05-10 | 1980-12-05 | Sogecan Ste Gle Canalisations | PROCESS AND APPARATUS FOR THE EXTRUSION OF PLASTIC TUBES WITH COMPOSITE WALLS |
FR2494180A1 (en) * | 1980-11-19 | 1982-05-21 | Comp Generale Electricite | Making plastic profiles or sheet - with enhanced transverse thermal conductivity, by extrusion via an annular choke to reorientate conductive fillers |
DE3233250A1 (en) * | 1982-09-08 | 1984-03-08 | Basf Ag, 6700 Ludwigshafen | DEVICE FOR EXTRUDING THERMOPLASTIC PLASTICS |
-
1988
- 1988-07-04 FR FR8809125A patent/FR2633554B1/en not_active Expired - Fee Related
-
1989
- 1989-06-16 CH CH2259/89A patent/CH680659A5/fr not_active IP Right Cessation
- 1989-06-19 AT AT0149589A patent/AT403778B/en not_active IP Right Cessation
- 1989-06-21 IT IT8920940A patent/IT1230889B/en active
- 1989-06-26 GB GB8914629A patent/GB2220165B/en not_active Expired - Fee Related
- 1989-06-28 BE BE8900711A patent/BE1006667A3/en not_active IP Right Cessation
- 1989-06-29 PT PT91013A patent/PT91013B/en not_active IP Right Cessation
- 1989-07-03 ES ES8902346A patent/ES2015163A6/en not_active Expired - Fee Related
- 1989-07-03 DE DE3921853A patent/DE3921853C2/en not_active Expired - Fee Related
- 1989-07-03 NL NL8901687A patent/NL195010C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
IT1230889B (en) | 1991-11-08 |
DE3921853C2 (en) | 1999-04-08 |
PT91013A (en) | 1990-02-08 |
NL195010C (en) | 2003-06-10 |
ES2015163A6 (en) | 1990-08-01 |
GB8914629D0 (en) | 1989-08-16 |
AT403778B (en) | 1998-05-25 |
BE1006667A3 (en) | 1994-11-16 |
GB2220165B (en) | 1992-07-01 |
PT91013B (en) | 1994-06-30 |
CH680659A5 (en) | 1992-10-15 |
FR2633554B1 (en) | 1990-10-19 |
ATA149589A (en) | 1997-10-15 |
FR2633554A1 (en) | 1990-01-05 |
NL8901687A (en) | 1990-02-01 |
GB2220165A (en) | 1990-01-04 |
DE3921853A1 (en) | 1990-01-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970919 |